高功率二极管激光器喷雾冷却实验研究  

Spray cooling of high power diode laser

作　　者：杨波[1] 高松信[1] 刘军[1] 王宏[2] 

机构地区：[1]中国工程物理研究院应用电子学研究所,四川绵阳621900 [2]重庆大学工程热物理研究所,重庆400030

出　　处：《强激光与粒子束》2014年第7期3-6,共4页High Power Laser and Particle Beams

基　　金：中国工程物理研究院科学技术发展基金项目(2011A0401019)

摘　　要：通过以液氨为制冷工质的开式喷雾冷却系统,在相同实验条件下研究了二极管激光器(DL)热沉喷雾表面分别为光滑表面、均匀密排微孔、深孔和多孔表面结构时的冷却效果,实验结果表明:在热流密度达到300W/cm2时,冷却表面温度均保持在28℃以内,适用于高热流密度下的DL热管理问题;喷雾表面均布微结构能显著强化喷雾冷却性能,当采用均匀密排多孔表面时,散热功率达511.5 W/cm2,对流传热系数为346 701.1W/(m2·℃),传热系数较光滑表面时提高了83.9%。Spray cooling experiments were performed on the heater with different micro-structured surfaces.A smooth surface was also tested for comparison.The micro-structures consisted of uniform porous tunnels with different size,and tests were conducted in an open system with ammonia as the working fluid.When the heat flux was 300W/cm^2,the surfaces temperature was kept below 28℃.This result indicated that ammonia was a optional fluid for diode laser cooling application.Moreover,the uniform micro-structured surfaces offered significant performance enhancement of heat transfer.At 511.5W/cm^2,heat transfer coefficient reached to 346 701.1W/（m^2·℃）which corresponded to 83.9%increase over smooth surface.

关 键 词：二极管激光器 热管理 喷雾冷却 微结构表面 强化换热 

分 类 号：TN248.4[电子电信—物理电子学]